INDEX. 



647 



Ostrya, 469, 498 : periderm, 

 548. 



Ostrya virginica, soa : crys- 

 tals, 142; gelatinous layer, 

 482. 



Osyris, haustorium, 383. 



Oxalls, secretory reservoirs, 

 202, 204, 210. 



Oxalis carnosa, hair struc- 

 tures, 65. 



Oxalis fruticosa, 408. 



Oxybaphus, 590, 591. 



Paeonia, stomata, 38 ; stone- 

 elements, 127. 



Paeonia Moutan, 479. 



Paleae, 54. 



Palisade-cells, 407. 



PalmesE, 10, 70, 102, 134, 

 169: endodermis, 124; 

 hairs, 63, 64; parenchyma, 

 411, 412; sclerenchyma, 

 128, 418, 420, 425; se- 

 cretions, 137, 139; thy- 

 loses, 171 ; vascular sys- 

 tem, 233, 261, 262, 263, 

 265, 298, 301, 311, 316, 

 322, 323, 357, 387; ves- 

 sels, 169 ; wax, 82, 85, 86, 

 87. 



Panax crassifolium, secre- 

 tory reservoirs, 450. 



Panax Lessonii, 450. 



Pancratium, 139. 



Pandaneae, 10 : air-spaces, 

 216; cork, 108; scleren- 

 chyma, 420 ; vascular sys- 

 tem, 233, 264, 265, 268, 

 320, 361, 386, 387. 



Pandanus, air-spaces, 213, 

 217; parenchyma, 409, 

 411 ; vascular system, 268, 

 302, 320, 329, 361, 362. 



Pandanus graminifolius,362. 



Pandanus javanicus, 268. 



Pandanus odoratissimus, 

 362. 



Pandanus pygmaeus, 268, 

 302, 362. 



Panicum turgidum, crystals, 

 141 ; sclerenchyma, 418, 

 419; wax, 83, 86. 



Papaver, 53: cortex, 404; 

 hair structures, 64, 65 ; 

 latex, 185 ; laticlferous 

 tubes, 187, 432 ; medul- 

 lary bundles, 248 ; root, 

 525; sclerenchyma, 420; 

 vascular system, 248, 305, 

 376. 



Papaver orientale, vascular 

 system, 236, 249, 377 j 

 water-pore, 53. 



Papaver Rhceas, 525. 



Papaver somniferum, 249 : 

 latex, 185 ; water-pore, 



S3- 



Papaveraceae, laticlferous 

 tubes, 187, 189, 199, 435, 

 525; water-pore, 51. 



Papaya vulgaris, 434. 



Papayaceae, 485 : laticlfe- 

 rous tubes, 187, 188, 189, 



434> 487. 



Papilionaceae, 12, 23: peri- 

 derm, 552 ; root develop- 

 ment, 398 ; stomata, 41 ; 

 vascular system, 354. 



Papulae, 54. 



Papyrus, air-spaces, 213,214, 

 215,217, 2 1 8; parenchyma, 

 409 ; vascular system, 339. 



Paragonia, 573. 



Paratropia macrophylla,45o. 



Parenchyma, 27,115; fibrous, 

 116; of the cortex, 536; 

 of the root, 413; primary, 

 arrangement of, 402. 



Parietaria, cystoliths, 105. 



Parinarium senegalense, si- 

 lica in leaves, 102. 



Paspalum sp., 359. 



Passerina, parenchyma, 410; 

 sclerenchyma, 418 ; sto- 

 mata, 49 ; vascular system, 

 303. 



Passerina ericoides, 33, 49, 

 410. 



Passerina filiformis, 49, 410. 



Passerina hirsuta, 49, 410. 



Passiflora, glands, 91, 96; 

 vascular system, 297, 308. 



Passiflora atrocaerulea, 



glands, 96. 



Passiflora caerulea, end of 

 vascular bundle, 377. 



Passiflora suberosa, fibres, 



133- 



Passiflora Vespertilio, vas- 

 cular system, 239, 308. 



Pastinaca, root, 518; sap- 

 passages, 449. 



Pastinaca sativa, 353. 



PauUinia, anomalous wood, 

 581, 582. 



Paulownia, 496 : annual 

 rings, 476. 



Pecopteris, 301. 



Pedicularis, 415. 



Peixotoa, anomalous wood, 



577- 

 Pelargonium, glands, 93. 

 Pelargonium roseum, 134, 



SOS- 

 Pelargonium zonale, 89 : 



hairs, 61, 63. 

 Pennisetum longistylum, 



419. 



Peperomia, 454 : epidermis, 

 33 ; medullary bundles, 

 249, 250 ; stomata, 45. 



Peperomia argyracea, 33. 



Peperomia arifolia, 33. 



Peperomia blanda, 33. 



Peperomia brachyphylla, 

 250. 



Peperomia galioides, 33, 

 250. 



Peperomia incana, 33, 249, 

 250. 



Peperomia magnoliifolia, 33. 



Peperomia obtusifolia, 33, 

 249. 



Peperomia pellucida, 33. 



Peperomia pereskiaefolia, 33. 



Peperomia polystachya, 33. 



Peperomia rubella, 33, 250. 



Peperomia variegata, 249, 

 250. 



Pereskia aculeata, stomata, 

 41. 



Periblem, 7. 



Pericambial layer, 389. 



Periderm, 544. 



Periploca, 486, 496 : laticl- 

 ferous tubes, 432 ; lenti- 

 cels, 560 J tracheides and 

 fibres, 483. 



Pernettya, pith, 403. 



Persica vulgaris, lenticels, 

 564. 



Persoonia myrtilloides, 35. 



Petasites niveus, 446, 447. 



Petastoma, 574. 



Petioles, structure, 405. 



Petraea arborea, 510. 



Petraea volubilis, 510. 



Petroselinum sativum, vas- 

 cular system', 353. 



Petunia nyctaginiflora, 141. 



Peucedanum, vascular sys- 

 tem, 253. 



Peucedanum Oreoselinum, 



253, 254- 



Phalsenopsis grandiflora, 

 aerial roots, 229. 



Phanerogaraae, 22 : axile 

 bundle in, 277; root de- 

 velopment, 397 ; with an 

 axile bundle, 311. 



Pharbitis hispida, anoma- 

 lous structure, 607; secre- 

 tory sacs, 151 ; stomata, 

 41. 



Phaseolus, 12 : connections 

 of vascular bundles, 386 ; 

 secondary thickening,474 ; 

 vascular system, 236, 241, 



352, 3S4, 386, 392- 

 Phaseolus multiflorus, 241 : 

 parenchyma, 117 (Fig. 

 46) ; tannin-sacs, 153. 



